Re Trucksprings

where did u order them from?

Just use the spacer supplied ,the bags work on expansion of the bag between the coils ,not on the bag length verticaly ,,you will find 10-15psi unloaded firms the ride nicely ,,go upto 35psi fully loaded and towing.

Hi Mark,

The small spacer sits at the bottom and is required to "form" the airbag such that when the spring compresses, the "spacer" pushes into the airbag and thus it folds back into itself. Not easy to explain in words but very simple to demonstrate.

Am not sure about a larger spacer to make up for the 50mm lift, but would imagine it would be the full diameter of the inside coil - not very helpful I'm sorry.

Cheers

Captain

Hi Mark,

What part no did you end up ordering? Did you have to pay gst when they landed on Oz?

Leroy

Am I misreading these replies?
On a Nissan the spacer referred to fits on top of the airbag and into the coil spring support bracket,the hose goes though the centre of the spacer in the hole provided.
If you want to use it on a lifted suspension another spacer (not supplied by truck springs) is required under the air bag on the lower spring mount.
If the lift is moderate say no more than 50mm the bag will stretch out a bit further and you can get away with it,if the lift is more than this the bag tries to expand to reach each end support beyond its recommended elastic limits and will not last as long.
Although as stated the bags expand between the coils to change the spring rate ,they still stretch between the retaining brackets i.e the spring top and bottom mounts.
Truck springs cannot supply the spacers,you could try Polyair through their agents such as Pedders,but what I did was just buy two rubber wheels of the correct diameter and with flat sides,and used the axle hole to bolt them to the lower spring mount which has a centre hole in it.
Regards

Hi Mark,

Just a suggestion. Get the top tower reinforced, with the lift, airbags and rough roads you'll rip the top tower.